參數(shù)資料
型號: MPC8536EBVTAVL
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 1500 MHz, MICROPROCESSOR, PBGA783
封裝: 29 X 29 MM, 2.80 MM HEIGHT, 1 MM PITCH, LEAD FREE, PLASTIC, FCBGA-783
文件頁數(shù): 54/127頁
文件大小: 1893K
代理商: MPC8536EBVTAVL
MPC8536E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 3
DDR2 and DDR3 SDRAM
Freescale Semiconductor
32
2.6
DDR2 and DDR3 SDRAM
This section describes the DC and AC electrical specifications for the DDR SDRAM interface of the MPC8536E. Note that
DDR2 SDRAM is GVDD(type) = 1.8 V and DDR3 SDRAM is GVDD(type) = 1.5 V.
2.6.1
DDR2 and DDR3 SDRAM DC Electrical Characteristics
Table 12 provides the recommended operating conditions for the DDR SDRAM component(s) of the MPC8536E when
interfacing to DDR2 SDRAM.
Table 13 provides the recommended operating conditions for the DDR SDRAM Controller of the MPC8536E when interfacing
to DDR3 SDRAM.
Table 12. DDR2 SDRAM DC Electrical Characteristics for GVDD(typ) = 1.8 V
Parameter/Condition
Symbol
Min
Max
Unit
Notes
I/O supply voltage
GVDD
1.7
1.9
V
1
I/O reference voltage
MVREF
0.49
× GVDD
0.51
× GVDD
V2
I/O termination voltage
VTT
MVREF –0.04
MVREF + 0.04
V
3
Input high voltage
VIH
MVREF+0.125
GVDD +0.3
V
Input low voltage
VIL
–0.3
MVREF – 0.125
V
Output leakage current
IOZ
–50
50
μA4
Output high current (VOUT = 1.420 V)
IOH
–13.4
mA
Output low current (VOUT = 0.280 V)
IOL
13.4
mA
Notes:
1. GVDD is expected to be within 50 mV of the DRAM GVDD at all times.
2. MVREF is expected to be equal to 0.5 × GVDD, and to track GVDD DC variations as measured at the receiver.
Peak-to-peak noise on MVREF may not exceed ±2% of the DC value.
3. VTT is not applied directly to the device. It is the supply to which far end signal termination is made and is expected to be
equal to MVREF. This rail should track variations in the DC level of MVREF.
4. Output leakage is measured with all outputs disabled, 0 V
VOUT GVDD.
Table 13. DDR3 SDRAM Interface DC Electrical Characteristics for GVDD(typ) = 1.5 V
Parameter/Condition
Symbol
Min
Max
Unit
Notes
I/O supply voltage
GVDD
1.425
1.575
V
1
I/O reference voltage
MVREFn
0.49
× GVDD
0.51
× GVDD
V2
Input high voltage
VIH
MVREFn + 0.100
GVDD
V—
Input low voltage
VIL
GND
MVREFn – 0.100
V
Output leakage current
IOZ
–50
50
μA3
Notes:
1. GVDD is expected to be within 50 mV of the DRAM GVDD at all times.
2. MVREFn is expected to be equal to 0.5 × GVDD, and to track GVDD DC variations as measured at the receiver.
Peak-to-peak noise on MVREFn may not exceed ±1% of the DC value.
3. Output leakage is measured with all outputs disabled, 0 V
VOUT GVDD.
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